@charset "UTF-8";
:root{--blue:#0a61ce;--blue-dark:#0852af;--blue-soft:#edf5ff;--ink:#171717;--muted:#737373;--line:#e5e5e5;--side:#f7f7f7;--surface:#fff;--danger:#b84040;--radius:16px;font-family:"Noto Sans JP",Inter,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;color:var(--ink);font-size:16px;font-synthesis:none}
*{box-sizing:border-box}
body{margin:0;background:white}
button,input,textarea,select{font:inherit}
button,a,input,textarea{ -webkit-tap-highlight-color:transparent}
button{cursor:pointer}
button:disabled{cursor:default;opacity:.45}
button,a{touch-action:manipulation}
a{color:var(--blue);text-decoration:none}
a:hover{text-decoration:underline}
button{color:inherit}
button:focus-visible,a:focus-visible{outline:3px solid #a6cdfa;outline-offset:3px}
input:focus,textarea:focus,select:focus{outline:none;border-color:#87b4eb;box-shadow:0 0 0 3px #1468d410}
svg{display:block;flex-shrink:0}
.icon{width:20px;height:20px;stroke:currentColor;fill:none;stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round}
.icon-button{border:0;background:transparent;border-radius:9px;width:40px;height:40px;display:inline-flex;align-items:center;justify-content:center;color:var(--muted);flex-shrink:0}
.icon-button:hover{background:#edf0f4;color:var(--ink)}
.button{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:40px;padding:9px 16px;border:1px solid var(--line);border-radius:8px;background:#fff;font-size:14px;font-weight:600;line-height:1.4;white-space:nowrap}
.button:hover{background:var(--side);text-decoration:none}
.button.primary{background:var(--blue);border-color:var(--blue);color:#fff;box-shadow:0 2px 4px #1468d412}
.button.primary:hover{background:var(--blue-dark)}
.button.outline{color:var(--blue);border-color:var(--blue)}
.button.danger{color:var(--danger)}
.button.small{min-height:34px;padding:7px 11px;font-size:.875rem}
.button.full{width:100%}
.brand{display:flex;align-items:center;gap:10px;user-select:none}
.wordmark{color:var(--blue);font-family:Inter,sans-serif;font-size:20px;font-weight:700}
.brand-name{display:none}
.muted{color:var(--muted)}
.eyebrow{font-size:.75rem;letter-spacing:.09em;font-weight:700;color:var(--muted)}
.demo-badge{border:1px solid #dce7f5;background:#f6faff;color:#637b99;border-radius:5px;padding:3px 7px;line-height:1.3;font-size:.75rem;letter-spacing:.06em;font-weight:600}
.pill{display:inline-flex;align-items:center;gap:5px;background:var(--blue-soft);color:var(--blue);padding:5px 9px;border-radius:7px;font-size:.75rem;font-weight:600}
.pill.gray{background:#f1f3f6;color:var(--muted)}
.login-page{min-height:var(--app-height,100dvh);background:var(--side);display:flex;flex-direction:column}
.login-brand{height:72px;flex-shrink:0;display:flex;align-items:center;padding:0 24px}
.login-card{width:400px;max-width:100%;background:#fff;border:1px solid var(--line);border-radius:16px;padding:32px;box-shadow:0 8px 12px #0000000d}
.login-card h1{text-align:center;font-size:28px;line-height:1.2;margin:0 0 24px;font-weight:500}
.field{display:flex;flex-direction:column;gap:8px;margin-bottom:18px}
.field label{font-size:.875rem;font-weight:600}
.input{width:100%;border:1px solid var(--line);background:#fff;border-radius:8px;padding:11px 16px;min-height:44px;color:var(--ink)}
textarea.input{resize:vertical;line-height:1.8}
.password-wrap{position:relative}
.password-wrap input{padding-right:46px}
.password-wrap .icon-button{position:absolute;right:3px;top:3px}
.login-notice{position:absolute;top:100%;left:50%;transform:translateX(-50%);width:min(520px,90vw);font-size:12px;line-height:1.8;color:var(--muted);text-align:center;margin:18px 0 0}
.error-text{color:var(--danger);font-size:.875rem;line-height:1.7;margin:10px 0}
.hidden{display:none!important}
.shell{height:var(--app-height,100dvh);display:flex;overflow:hidden;background:#fff}
.sidebar{width:235px;flex-shrink:0;background:var(--side);border-right:1px solid var(--line);display:flex;flex-direction:column;gap:24px;padding:20px 16px 16px;min-height:0}
.sidebar-brand{display:flex;align-items:center;justify-content:space-between;min-height:32px}
.sidebar-brand .brand-name{display:none}
.sidebar .new-chat{width:100%;justify-content:flex-start;background:#fff;min-height:40px;padding:8px 12px;flex-shrink:0;font-weight:500}
.sidebar-scroll{overflow-y:auto;flex:1;min-height:0;scrollbar-width:thin}
.nav-group+.nav-group{margin-top:24px}
.nav-label{margin-bottom:8px;font-size:12px;line-height:1.5;color:var(--muted);letter-spacing:.24px}
.nav-item-row{position:relative;display:flex;align-items:center;width:100%;margin:0 0 6px;border-radius:6px;min-width:0}
.nav-item-row:hover,.nav-item-row.active{background:#eaf0f8;color:#205a9e}
.nav-item{display:flex;align-items:center;gap:6px;flex:1;min-width:0;padding:5px 4px;border:0;border-radius:4px;font-size:14px;line-height:1.5;color:inherit;text-align:left;background:transparent}
.nav-item span:not(.nav-pin){overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.nav-item:hover{text-decoration:none}
.nav-pin{font-size:7px;color:var(--blue);flex-shrink:0}
.nav-more{display:flex;align-items:center;justify-content:center;width:28px;height:28px;flex-shrink:0;border:0;border-radius:6px;background:transparent;color:var(--muted);opacity:0}
.nav-item-row:hover .nav-more,.nav-item-row.active .nav-more,.nav-more[aria-expanded="true"]{opacity:1}
.nav-more:hover{background:#dde9f8;color:var(--ink)}
.nav-more .icon{width:16px;height:16px}
.nav-item-menu{position:absolute;right:0;top:32px;z-index:50;width:150px;padding:5px;background:var(--surface);border:1px solid var(--line);border-radius:9px;box-shadow:0 8px 24px #0002}
.nav-item-menu button{display:block;width:100%;border:0;background:transparent;border-radius:6px;padding:8px 10px;text-align:left;font-size:13px;color:var(--ink)}
.nav-item-menu button:hover{background:var(--side)}
.nav-item-menu button.danger{color:var(--danger)}
.nav-item .icon{width:16px;height:16px}
.nav-empty{font-size:12px;line-height:1.8;color:var(--muted);margin:0 0 8px}
.nav-all{color:var(--blue);font-size:14px;font-weight:500;line-height:1.5;display:block;padding:0;border:0;background:transparent;text-align:left}
.nav-all:hover{text-decoration:underline}
.profile{display:flex;align-items:center;gap:6px;background:#fff;border:0;border-top:1px solid var(--line);padding:10px 12px;border-radius:0;min-height:56px;flex-shrink:0;width:100%;text-align:left;font-size:14px}
.main{min-width:0;flex:1;display:flex;flex-direction:column;height:100%;position:relative}
.topbar{display:none;flex-shrink:0;height:56px;padding:8px 16px;align-items:center;background:#fff}
.work-area{flex:1;display:flex;flex-direction:column;overflow:hidden;position:relative;min-height:0}
.sidebar-backdrop{display:none}
.welcome{width:100%;min-height:260px;flex:1;position:relative;padding:24px}
.welcome-heading{position:absolute;left:50%;bottom:calc(50% + 40px);transform:translateX(-50%);max-width:650px;width:calc(100% - 48px);font-size:28px;font-weight:500;line-height:1.5;text-align:center;margin:0}
.welcome>.composer-wrap{position:absolute;left:50%;top:50%;transform:translate(-50%,-50%)}
.composer-wrap{width:min(650px,calc(100% - 32px));margin:0 auto;padding:0 0 16px;flex-shrink:0;background:#fff}
.composer{display:flex;align-items:flex-end;gap:8px;border:1px solid var(--line);border-radius:8px;background:#fff;padding:1px 8px;min-height:44px}
.attach-button{width:34px;height:34px;align-self:center;flex-shrink:0;border:0;border-radius:8px;background:transparent;color:var(--muted);display:flex;align-items:center;justify-content:center}
.attach-button:hover{background:var(--side);color:var(--ink)}
.attach-button .icon{width:18px;height:18px}
.attachment-drafts{display:flex;flex-wrap:wrap;gap:8px;margin:0 0 8px}
.attachment-chip{display:flex;align-items:center;gap:7px;max-width:100%;padding:7px 9px;border:1px solid var(--line);border-radius:8px;background:var(--surface);font-size:12px}
.attachment-chip.uploading{opacity:.7}
.attachment-name{max-width:230px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;font-weight:600}
.attachment-size,.attachment-status{color:var(--muted);white-space:nowrap}
.attachment-status.error{color:var(--danger)}
.attachment-remove{width:22px;height:22px;border:0;border-radius:50%;background:transparent;color:var(--muted);display:flex;align-items:center;justify-content:center}
.attachment-remove:hover{background:var(--side);color:var(--ink)}
.composer-wrap.drag-active{outline:2px dashed var(--blue);outline-offset:5px;border-radius:10px}
.message-attachments{display:flex;flex-wrap:wrap;gap:6px;margin-bottom:8px}
.message-attachment{display:inline-flex;align-items:center;gap:5px;padding:5px 7px;border-radius:6px;background:#e8e8e8;font-size:12px}
.message-attachment .icon{width:13px;height:13px}
.composer:focus-within{border-color:#9cbfec;box-shadow:0 0 0 3px #1468d405}
.composer textarea{display:block;flex:1;min-width:0;width:100%;border:0;outline:0;box-shadow:none;resize:none;padding:8px 0;background:transparent;line-height:24px;font-size:16px;min-height:40px;max-height:264px;color:var(--ink);scrollbar-width:thin}
.composer textarea::placeholder{color:var(--muted)}
.send-button{position:relative;width:32px;height:32px;flex-shrink:0;background:var(--blue);color:#fff;border:0;border-radius:50%;display:flex;align-items:center;justify-content:center}
.send-button:disabled{background:#d4d4d4;color:#fff;opacity:1}
.sheet-prompt [data-tooltip]{position:relative}
.send-button[data-tooltip]::after,.sheet-prompt [data-tooltip]::after{content:attr(data-tooltip);position:absolute;right:0;bottom:calc(100% + 10px);z-index:20;padding:6px 9px;border-radius:6px;background:#202124;color:#fff;font-size:12px;font-weight:500;line-height:1.2;white-space:nowrap;opacity:0;visibility:hidden;transform:translateY(3px);transition:opacity .15s,transform .15s,visibility .15s;pointer-events:none;box-shadow:0 4px 12px #0003}
.send-button[data-tooltip]:focus-visible::after,.sheet-prompt [data-tooltip]:focus-visible::after{opacity:1;visibility:visible;transform:translateY(0)}
@media (hover:hover) and (pointer:fine){
  .send-button[data-tooltip]:hover::after,.sheet-prompt [data-tooltip]:hover::after{opacity:1;visibility:visible;transform:translateY(0)}
}
.chat-scroll{overflow-y:auto;flex:1;overscroll-behavior:contain;scroll-behavior:smooth;scrollbar-width:thin}
.messages{width:min(837px,calc(100% - 32px));margin:0 auto;padding:16px 0 0}
.message{margin-bottom:16px;line-height:1.5;overflow-wrap:anywhere}
.user-message{display:flex;justify-content:flex-end}
.user-bubble{background:#f2f2f2;border-radius:16px;padding:16px;width:520px;max-width:86%;white-space:pre-wrap;font-size:16px}
.message-content{font-size:16px;line-height:1.5;color:var(--ink)}
.message-content p{margin:0 0 12px}
.message-content p:last-child{margin-bottom:0}
.message-content ul{margin:9px 0 16px;padding-left:24px}
.message-content li+li{margin-top:5px}
.message-content strong{font-weight:700;color:var(--ink)}
.message-content h3{font-size:16px;font-weight:700;margin:12px 0}
.code-block{margin:14px 0;padding:14px 16px;overflow-x:auto;border:1px solid var(--line);border-radius:10px;background:#f7f8fa;color:var(--ink);font-size:13px;line-height:1.7;white-space:pre}
.code-block code{font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace}
.math-block{margin:14px 0;overflow-x:auto;overflow-y:hidden;padding:4px 0}
.login-card .button.loading{position:relative;cursor:wait;opacity:.82}
.table-scroll{overflow-x:auto;border:1px solid var(--line);border-radius:10px;margin:15px 0;max-width:100%}
.message-content table{border-collapse:collapse;width:100%;font-size:.875rem;line-height:1.7;min-width:360px}
.message-content th{background:#f7f9fc;font-weight:600;text-align:left;color:#52647b}
.message-content th,.message-content td{padding:10px 13px;border-bottom:1px solid var(--line);vertical-align:top;white-space:normal}
.message-content tr:last-child td{border-bottom:0}
.source-list{display:flex;flex-wrap:wrap;gap:7px;margin-top:17px}
.source-button{display:flex;align-items:center;gap:6px;background:#f7f9fc;border:1px solid #e7edf5;border-radius:7px;color:#60748f;font-size:.75rem;padding:6px 9px;max-width:100%;text-align:left}
.source-button:hover{border-color:#b5ceed;color:var(--blue)}
.source-button .icon{width:13px;height:13px}
.follow-ups{display:flex;flex-wrap:wrap;gap:7px;margin:16px 0 4px}
.follow-up{font-size:.75rem;line-height:1.7;border:1px solid #d9e5f4;border-radius:8px;background:white;color:#5d7fa6;padding:7px 10px;text-align:left}
.follow-up:hover{background:var(--blue-soft)}
.thinking{display:flex;align-items:center;gap:10px;color:#8491a2;font-size:.875rem}
.thinking-dots{display:flex;gap:4px}
.thinking-dots i{display:block;width:5px;height:5px;background:#91b1da;border-radius:50%;animation:pulse 1.1s infinite}
.thinking-dots i:nth-child(2){animation-delay:.15s}
.thinking-dots i:nth-child(3){animation-delay:.3s}
@keyframes pulse{0%,70%,100%{opacity:.35}
35%{opacity:1}
}
.response-error{background:#fff7f6;border:1px solid #f4dedb;border-radius:10px;padding:13px 15px;line-height:1.8;font-size:.875rem;color:#98645f}
.response-error .button{margin-top:9px}
.sheet-prompt{width:min(650px,calc(100% - 32px));margin:0 auto;padding:0 0 16px;display:flex;justify-content:flex-end;flex-shrink:0}
.scroll-latest{position:absolute;bottom:178px;right:24px;border:1px solid var(--line);background:white;box-shadow:0 3px 12px #0001;border-radius:50%;width:38px;height:38px;display:flex;align-items:center;justify-content:center;color:var(--muted)}
.page-scroll{overflow-y:auto;flex:1;padding:20px 24px 24px;background:#fff;scrollbar-width:thin}
.page-container{width:min(820px,100%);margin:0 auto}
.page-heading{margin:5px 0 28px;display:flex;align-items:center;justify-content:space-between;gap:15px}
.page-heading h2{font-size:1.5rem;letter-spacing:.01em;font-weight:600;margin:0 0 8px}
.page-heading p{font-size:.875rem;color:var(--muted);margin:0;line-height:1.8}
.count-label{font-size:.875rem;color:#8b97a7}
.list-row{border-bottom:1px solid var(--line);padding:21px 5px;display:flex;gap:15px;align-items:center}
.list-row a{min-width:0;flex:1;color:inherit;text-decoration:none}
.list-row:hover{background:#fafcff}
.list-icon{width:40px;height:40px;background:#f2f6fb;color:#7893b3;border-radius:11px;display:flex;align-items:center;justify-content:center;flex-shrink:0}
.list-title{font-size:1rem;font-weight:550;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;margin:0 0 6px}
.list-summary{font-size:.875rem;color:var(--muted);overflow:hidden;white-space:nowrap;text-overflow:ellipsis;margin:0;line-height:1.7}
.list-date{font-size:.75rem;color:#929caa;white-space:nowrap}
.empty-state{text-align:center;padding:75px 20px}
.empty-icon{display:flex;align-items:center;justify-content:center;width:52px;height:52px;border-radius:16px;background:#f2f6fc;color:#8da7c8;margin:0 auto 20px}
.empty-icon .icon{width:26px;height:26px}
.empty-state h3{font-size:1.125rem;margin:0 0 12px;font-weight:550}
.empty-state p{font-size:.875rem;color:var(--muted);line-height:1.9;margin:0 0 23px}
.sheet-toolbar{display:flex;align-items:center;justify-content:space-between;gap:12px;margin:0 0 24px;width:100%;min-height:36px}
.sheet-toolbar-left{font-size:.75rem;color:#8a95a4;display:flex;gap:9px;align-items:center}
.sheet-toolbar-actions{display:flex;gap:12px}
.sheet-paper{border:1px solid var(--line);border-radius:16px;background:#fff;max-width:800px;margin:0 auto;padding:24px}
.sheet-document-heading{display:none}
.sheet-document-heading h2{font-size:1.25rem;line-height:1.6;margin:8px 0 7px;font-weight:650}
.sheet-document-heading .sheet-meta{font-size:.75rem;color:var(--muted);line-height:1.9}
.sheet-section-title{font-size:20px;font-weight:600;line-height:1.2;margin:0 0 16px}
.sheet-section-title .icon{width:18px;height:18px;color:#7d9aba}
.sheet-overview{font-size:16px;line-height:1.5;white-space:pre-wrap;margin:0;color:var(--ink)}
.sheet-concerns-title{margin-top:28px}
.sheet-divider{height:1px;background:var(--line);margin:20px 0}
.topic{background:var(--side);border:0;border-radius:12px;padding:16px;margin-bottom:16px;break-inside:avoid}
.topic-heading{display:flex;align-items:flex-start;gap:8px;margin-bottom:10px}
.topic-title{font-size:16px;font-weight:700;line-height:1.5;margin:0}
.topic-priority{font-size:16px;line-height:1.5;white-space:nowrap;flex-shrink:0}
.topic-label{font-size:13px;color:var(--muted);margin:6px 0}
.topic-detail{font-size:16px;line-height:1.5;white-space:pre-wrap;margin:0;color:var(--ink)}
.topic-request{font-size:13px;color:var(--muted);margin:0 0 6px}
.sheet-edit textarea{font-size:.875rem;min-height:90px}
.sheet-edit .input{background:#fff}
.sheet-edit .field{margin-bottom:13px}
.topic-edit-title{display:flex;gap:9px;align-items:center}
.topic-edit-title input{flex:1;min-width:0}
.topic-edit-row{display:flex;gap:12px}
.topic-edit-row .field{flex:1;min-width:0}
.edit-note{background:#f4f8fe;border:1px solid #e1ecfb;color:#6884a9;border-radius:9px;padding:12px 15px;font-size:.875rem;line-height:1.8;margin-bottom:22px}
.edit-actions{display:flex;gap:10px;justify-content:flex-end;margin-top:20px}
.back-link{display:inline-flex;align-items:center;gap:6px;font-size:.75rem;color:#8290a3;border:0;background:none;padding:6px 0}
.back-link .icon{width:15px;height:15px}
.modal-backdrop{position:fixed;inset:0;z-index:90;background:#1c2b416b;backdrop-filter:blur(2px);display:flex;align-items:center;justify-content:center;padding:24px}
.modal{background:white;border-radius:17px;box-shadow:0 24px 90px #10274425;width:min(620px,100%);max-height:85dvh;display:flex;flex-direction:column;overflow:hidden}
.modal.wide{width:min(850px,100%)}
.modal-header{display:flex;align-items:center;justify-content:space-between;gap:15px;padding:19px 23px;border-bottom:1px solid var(--line)}
.modal-header h2{font-size:1rem;font-weight:600;margin:0}
.modal-body{padding:24px;overflow-y:auto;line-height:1.85;font-size:.875rem}
.modal-body h3{font-size:1rem;margin:0 0 10px}
.modal-body p{margin:0 0 15px}
.modal-actions{padding:15px 23px;border-top:1px solid var(--line);display:flex;justify-content:flex-end;gap:9px}
.modal-description{font-size:.875rem;color:var(--muted);line-height:1.9}
.settings-section+.settings-section{border-top:1px solid var(--line);padding-top:18px;margin-top:20px}
.settings-section h3{margin:0 0 9px}
.settings-grid{display:flex;gap:8px;flex-wrap:wrap}
.setting-row{display:flex;align-items:center;justify-content:space-between;gap:15px;padding:8px 0}
.text-link{border:0;background:none;color:var(--blue);font-size:.875rem;padding:6px 0}
#toast{position:fixed;left:50%;bottom:24px;transform:translate(-50%,12px);background:#243852;color:#fff;padding:12px 19px;border-radius:10px;font-size:.875rem;box-shadow:0 5px 25px #0002;z-index:150;opacity:0;pointer-events:none;transition:opacity .2s,transform .2s;max-width:calc(100vw - 40px);line-height:1.7}
#toast.visible{opacity:1;transform:translate(-50%,0)}
.not-found{padding:60px 20px;text-align:center}
.saved-state{font-size:.75rem;color:#7c8fa7;display:flex;align-items:center;gap:6px}
.saved-state .icon{width:14px;height:14px}

.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}
.login-center{position:relative;margin:auto;max-width:calc(100% - 48px)}
.login-fields{display:flex;flex-direction:column;gap:16px;margin-bottom:24px}
.login-card .input{font-size:14px;height:44px}
.login-card .button{height:44px;font-size:16px;font-weight:500}
.sidebar-close{display:inline-flex;width:32px;height:32px;border-radius:50%;background:#f0f0f0;color:var(--ink)}
.sidebar-close .icon,.new-chat .icon{width:18px;height:18px}.send-button .icon{width:16px;height:16px}
.profile-identity{flex:1;min-width:0;line-height:1.5;overflow-wrap:anywhere}
.profile .demo-badge{font-size:10px;padding:2px 4px}
.welcome .composer-wrap{width:min(650px,100%);padding:0}
.welcome .composer{min-height:48px}
.welcome .composer textarea{min-height:44px;padding:10px 0}
.welcome .send-button{align-self:center}
.sheet-toolbar .button{min-height:36px;padding:7px 16px}
@media(min-width:701px){
.shell.sidebar-collapsed .sidebar{display:none}
.shell.sidebar-collapsed .topbar{display:flex}
}
@media(max-width:700px){
.sidebar{position:fixed;left:0;top:0;bottom:0;height:var(--app-height,100dvh);width:min(280px,85vw);z-index:70;transform:translateX(-100%);transition:transform .2s;padding-bottom:max(16px,env(safe-area-inset-bottom))}
.shell.sidebar-open .sidebar{transform:translateX(0)}
.shell.sidebar-open .sidebar-backdrop{display:block;position:fixed;inset:0;background:#1a2c416b;z-index:60;border:0}
.topbar{display:flex}
.main{width:100%}
.welcome{display:flex;position:static;flex-direction:column;align-items:center;justify-content:center;gap:24px;padding:24px 20px}
.welcome-heading{position:static;transform:none;width:100%;font-size:24px}
.welcome>.composer-wrap{position:static;transform:none}
.composer-wrap{padding-bottom:max(16px,env(safe-area-inset-bottom))}
.messages{padding-top:16px}
.user-bubble{max-width:91%;width:auto}
.nav-item,.nav-all{min-height:32px;display:flex;align-items:center}
.page-scroll{padding:16px}
.page-heading{margin:0 0 19px}
.page-heading h2{font-size:22px}
.list-row{gap:11px;padding:18px 0}
.list-icon{width:33px;height:33px;border-radius:9px}
.sheet-toolbar{gap:8px;flex-wrap:wrap}
.sheet-toolbar-left{font-size:12px}
.sheet-paper{padding:18px;border-radius:12px}
.sheet-section-title{font-size:18px}
.topic{padding:16px 14px}
.topic-heading{flex-wrap:wrap}
.topic-edit-row{flex-direction:column;gap:0}
.modal-backdrop{padding:14px}
.modal{max-height:88dvh;border-radius:14px}
.modal-header{padding:15px 16px}
.modal-body{padding:18px}
.modal-actions{padding:13px 16px}
.login-card{padding:28px 24px}
.login-notice{width:min(360px,90vw)}
}
@media(max-height:600px){
.work-area:has(.welcome){overflow-y:auto}
.welcome{padding-top:24px}
.login-center{margin:24px auto 120px}
}
@media(prefers-reduced-motion:reduce){
*,*::before,*::after{animation-duration:.01ms!important;transition-duration:.01ms!important;scroll-behavior:auto!important}
}

.signup-card{width:460px}
.signup-school{display:inline-flex;align-items:center;justify-content:center;width:100%;margin:0 0 12px;color:var(--blue);font-size:.875rem;font-weight:600}
.signup-description{margin:-8px 0 22px;color:var(--muted);font-size:.875rem;line-height:1.7;text-align:center}
.signup-expiry{margin:18px 0 0;color:var(--muted);font-size:.75rem;line-height:1.6;text-align:center}
.signup-success{width:48px;height:48px;border-radius:50%;margin:0 auto 16px;display:flex;align-items:center;justify-content:center;background:#eef8f0;color:#237a3b;font-size:24px;font-weight:700}
.field-hint{color:var(--muted);font-size:.75rem;line-height:1.5}
@media (max-width:520px){.signup-card{padding:24px}.login-brand{padding:0 16px}.login-center{max-width:calc(100% - 32px)}}

.signup-name-grid{display:grid;grid-template-columns:1fr 1fr;gap:12px}
.signup-name-grid .field{min-width:0}
@media (max-width:520px){.signup-name-grid{grid-template-columns:1fr}}

.static-source{cursor:default;pointer-events:none}

.admin-page{min-height:100dvh;background:#f7f7f7}
.admin-header{height:64px;background:#fff;border-bottom:1px solid var(--line);display:flex;align-items:center;justify-content:space-between;padding:0 24px}
.admin-header>div{display:flex;align-items:center;gap:12px}
.admin-container{width:min(1100px,calc(100% - 32px));margin:0 auto;padding:32px 0 64px}
.lab-card{background:#fff;border:1px solid var(--line);border-radius:14px;padding:24px;margin-top:20px}
.lab-card h2,.lab-card h3{margin-top:0}
.lab-output{white-space:pre-wrap;overflow:auto;max-height:520px;background:#f7f7f7;border:1px solid var(--line);border-radius:8px;padding:16px;font-size:13px;line-height:1.65}
@media (max-width:700px){.admin-header{padding:0 16px}.admin-container{width:min(100% - 24px,1100px);padding-top:20px}.lab-card{padding:16px}}

.admin-tabs{display:flex;gap:8px;margin:0 0 24px;border-bottom:1px solid var(--line)}
.admin-tabs a{padding:10px 14px;text-decoration:none;color:var(--muted);border-bottom:2px solid transparent;font-weight:600}
.admin-tabs a.active{color:var(--text);border-bottom-color:currentColor}
.admin-form-grid{display:grid;grid-template-columns:1fr 2fr 140px;gap:12px}
.admin-section-heading{display:flex;justify-content:space-between;align-items:center;gap:16px}
.admin-table-wrap{overflow:auto}
.admin-table{width:100%;border-collapse:collapse;min-width:760px}
.admin-table th,.admin-table td{text-align:left;padding:12px 10px;border-bottom:1px solid var(--line);vertical-align:top;font-size:14px}
.admin-table th{font-size:12px;color:var(--muted);font-weight:600}
.invite-created{padding:14px;border:1px solid var(--line);border-radius:10px;background:var(--surface-soft,#f7f7f7);margin-bottom:16px}
.invite-created .input{margin-top:8px}
@media (max-width:700px){.admin-form-grid{grid-template-columns:1fr}.admin-tabs{overflow:auto}.admin-section-heading{align-items:flex-start}}

.theme-toggle{display:inline-flex;align-items:center;gap:10px;border:0;background:transparent;padding:4px 0;white-space:nowrap}
.theme-toggle-track{position:relative;width:42px;height:24px;border-radius:999px;background:#c9cdd3;transition:background .2s}
.theme-toggle-thumb{position:absolute;left:3px;top:3px;width:18px;height:18px;border-radius:50%;background:#fff;box-shadow:0 1px 3px #0003;transition:transform .2s}
.theme-toggle[aria-checked="true"] .theme-toggle-track{background:var(--blue)}
.theme-toggle[aria-checked="true"] .theme-toggle-thumb{transform:translateX(18px)}
.theme-toggle-label{font-size:.875rem;font-weight:600}

:root[data-theme="dark"]{--blue:#70a9f6;--blue-dark:#8bb9f8;--blue-soft:#1c2b3e;--ink:#f1f3f5;--muted:#a9b0b9;--line:#353a42;--side:#202329;--surface:#17191d;--danger:#ff8a8a}
:root[data-theme="dark"] body,
:root[data-theme="dark"] .shell,
:root[data-theme="dark"] .main,
:root[data-theme="dark"] .work-area,
:root[data-theme="dark"] .page-scroll,
:root[data-theme="dark"] .composer-wrap,
:root[data-theme="dark"] .topbar{background:var(--surface);color:var(--ink)}
:root[data-theme="dark"] .sidebar,
:root[data-theme="dark"] .login-page,
:root[data-theme="dark"] .topic{background:var(--side)}
:root[data-theme="dark"] .profile,
:root[data-theme="dark"] .sidebar .new-chat,
:root[data-theme="dark"] .composer,
:root[data-theme="dark"] .login-card,
:root[data-theme="dark"] .modal,
:root[data-theme="dark"] .sheet-paper,
:root[data-theme="dark"] .button,
:root[data-theme="dark"] .follow-up,
:root[data-theme="dark"] .source-page,
:root[data-theme="dark"] .input{background:var(--surface);color:var(--ink);border-color:var(--line)}
:root[data-theme="dark"] .button.primary,
:root[data-theme="dark"] .send-button:not(:disabled){background:#3b82df;color:#fff;border-color:#3b82df}
:root[data-theme="dark"] .send-button:disabled{background:#454b55;color:#a9b0b9}
:root[data-theme="dark"] .sidebar-close,
:root[data-theme="dark"] .user-bubble,
:root[data-theme="dark"] .pill.gray,
:root[data-theme="dark"] .list-icon{background:#2a2e35;color:var(--ink)}
:root[data-theme="dark"] .nav-item-row:hover,
:root[data-theme="dark"] .nav-item-row.active,
:root[data-theme="dark"] .follow-up:hover,
:root[data-theme="dark"] .icon-button:hover{background:#293343}
:root[data-theme="dark"] .table-scroll,
:root[data-theme="dark"] .message-content th,
:root[data-theme="dark"] .source-button{border-color:var(--line);background:#202329;color:var(--ink)}
:root[data-theme="dark"] .message-content th{color:#c3c8cf}
:root[data-theme="dark"] .response-error{background:#3a2525;border-color:#5a3535;color:#ffb5ae}
:root[data-theme="dark"] .modal-backdrop{background:#0009}
:root[data-theme="dark"] #toast{background:#e8eaed;color:#202124}

:root[data-theme="dark"] .nav-item-menu{background:var(--surface);border-color:var(--line)}
:root[data-theme="dark"] .nav-more:hover,:root[data-theme="dark"] .nav-item-menu button:hover{background:#293343}

:root[data-theme="dark"] .code-block{background:#202329;border-color:var(--line)}

:root[data-theme="dark"] .attachment-chip{background:var(--surface);border-color:var(--line)}
:root[data-theme="dark"] .message-attachment{background:#353a42}

.kpi-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:14px;margin:0 0 20px}
.kpi-card{background:var(--surface);border:1px solid var(--line);border-radius:12px;padding:18px}
.kpi-card span{display:block;color:var(--muted);font-size:12px;margin-bottom:8px}
.kpi-card strong{font-size:28px;font-weight:650;line-height:1.2}
.kpi-table td:not(:first-child),.kpi-table th:not(:first-child){text-align:right}
@media (max-width:760px){.kpi-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media (max-width:480px){.kpi-grid{grid-template-columns:1fr}}


.kpi-card small{font-size:12px;color:var(--muted);margin-left:4px}
.kpi-subtabs{display:flex;gap:8px;margin:0 0 4px}
.kpi-subtabs button{border:1px solid var(--line);background:var(--surface);color:var(--muted);border-radius:999px;padding:8px 14px;font-size:13px;font-weight:600}
.kpi-subtabs button.active{color:var(--ink);border-color:#9fb9db;background:var(--blue-soft)}
.kpi-funnel{display:flex;flex-direction:column;gap:16px;margin-top:18px}
.kpi-funnel-row{display:grid;grid-template-columns:150px 1fr 56px;align-items:center;gap:14px}
.kpi-funnel-label{display:flex;justify-content:space-between;gap:8px;font-size:13px}
.kpi-funnel-label span,.kpi-funnel-rate{color:var(--muted);font-size:12px}
.kpi-funnel-track{height:14px;background:#edf1f5;border-radius:999px;overflow:hidden}
.kpi-funnel-fill{height:100%;background:var(--blue);border-radius:inherit}
.kpi-trend{display:flex;align-items:flex-end;gap:8px;min-height:220px;overflow-x:auto;padding:18px 4px 8px}
.kpi-trend-day{width:28px;min-width:28px;text-align:center}
.kpi-trend-bars{height:160px;display:flex;align-items:flex-end;justify-content:center;gap:2px}
.kpi-trend-bars i{display:block;width:6px;min-height:2px;border-radius:3px 3px 0 0;background:var(--blue)}
.kpi-trend-bars i.rag{opacity:.55}
.kpi-trend-bars i.sheet{opacity:.3}
.kpi-trend-day>span{display:block;margin-top:7px;font-size:10px;color:var(--muted);transform:rotate(-45deg);transform-origin:center}
.kpi-legend{display:flex;gap:16px;flex-wrap:wrap;color:var(--muted);font-size:12px}
.kpi-distribution-grid{display:grid;grid-template-columns:1fr 1fr;gap:20px}
.distribution-list{display:flex;flex-direction:column;gap:12px;margin-top:16px}
.distribution-row{display:grid;grid-template-columns:70px 1fr 48px;gap:10px;align-items:center;font-size:13px}
.distribution-row>div{height:10px;background:#edf1f5;border-radius:999px;overflow:hidden}
.distribution-row i{display:block;height:100%;background:var(--blue);border-radius:inherit}
.distribution-row strong{text-align:right;font-size:12px}
@media (max-width:760px){.kpi-funnel-row{grid-template-columns:120px 1fr 48px}.kpi-distribution-grid{grid-template-columns:1fr}.kpi-subtabs{overflow-x:auto}}


.membership-grid{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.membership-preview{font-size:12px;color:var(--muted);margin:4px 0 16px;overflow-wrap:anywhere}
.membership-help{position:relative;display:inline-flex;vertical-align:middle}
.membership-info{border:0;background:transparent;color:var(--muted);padding:2px 5px;font-size:14px;cursor:help}
.membership-help [role="tooltip"]{position:absolute;left:0;bottom:100%;z-index:30;width:230px;max-width:65vw;padding:7px 9px;background:#202124;color:#fff;border-radius:6px;font-size:12px;font-weight:400;line-height:1.5;visibility:hidden;opacity:0;pointer-events:none}
.membership-help:hover [role="tooltip"],.membership-help:focus-within [role="tooltip"]{visibility:visible;opacity:1}

.signup-membership{border:1px solid var(--line);border-radius:12px;padding:16px;margin:8px 0 24px;min-width:0}
.signup-membership legend{font-weight:600;padding:0 6px}
.signup-membership-preview{display:flex;flex-direction:column;gap:5px;margin:0 0 18px;overflow-wrap:anywhere}
.signup-membership-preview span{font-size:12px;color:var(--muted)}
.signup-membership-preview strong{font-size:22px;color:var(--ink)}
.signup-membership .membership-grid{gap:12px}
.signup-membership .field{min-width:0}
.membership-help-number [role="tooltip"]{left:auto;right:0}
.signup-review{margin:24px 0;overflow-wrap:anywhere}
.signup-review dt{font-size:12px;color:var(--muted);margin-top:18px}
.signup-review dd{margin:5px 0 0;font-size:16px}
.signup-review small{display:block;color:var(--muted);margin-top:4px}
.signup-card .button.full+.button.full{margin-top:12px}